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Siebenhofer, A; Plank, J; Berghold, A; Jeitler, K; Horvath, K; Narath, M; Gfrerer, R; Pieber, TR.
Short acting insulin analogues versus regular human insulin in patients with diabetes mellitus.
COCHRANE DATABASE SYST REV. 2006; 4(2): CD003287-CD003287. Doi: 10.1002/14651858.CD003287.pub4
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Leading authors Med Uni Graz: Siebenhofer-Kroitzsch Andrea
Co-authors Med Uni Graz: Berghold Andrea; Horvath Karl; Jeitler Klaus; Pieber Thomas
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Abstract:: BACKGROUND: Short acting insulin analogue use for diabetic patients is still controversial, as reflected in many scientific debates. OBJECTIVES: To assess the effects of short acting insulin analogues versus regular human insulin. SEARCH STRATEGY: The Cochrane Library (Issue 3, 2005), MEDLINE, EMBASE until September 2005. SELECTION CRITERIA: Randomised controlled trials with an intervention duration of at least 4 weeks. DATA COLLECTION AND ANALYSIS: Trial selection and evaluation of study quality was done independently by two reviewers. MAIN RESULTS: Altogether 8274 participants took part in 49 randomised controlled studies. Most studies were of poor methodological quality. In patients with type 1 diabetes, the weighted mean difference (WMD) of HbA1c was -0.1% (95% CI: -0.2 to -0.1) in favour of insulin analogue, whereas in patients with type 2 diabetes the WMD was 0.0% (95% CI: -0.1 to 0.0). In subgroup analyses of different types of interventions in type 1 diabetic patients, the WMD in HbA1c was -0.2% (95% CI: -0.3 to -0.1) in favour of insulin analogue in studies using continuous subcutaneous insulin injections (CSII), whereas for conventional intensified insulin therapy (IIT) studies the WMD in HbA1c was -0.1% (95% CI: -0.1 to 0.0). The WMD of the overall mean hypoglycaemic episodes per patient per month was -0.2 (95% CI: -1.1 to 0.7) and -0.2 (95% CI: -0.5 to 0.1) for analogues in comparison to regular insulin in patients with type 1 diabetes and type 2 diabetes, respectively. For studies in type 1 diabetes patients the incidence of severe hypoglycaemia ranged from 0 to 247.3 (median 21.8) episodes per 100 person-years for insulin analogues and from 0 to 544 (median 46.1) for regular insulin, in type 2 the incidence ranged from 0 to 30.3 (median 0.3) episodes per 100 person-years for insulin analogues and from 0 to 50.4 (median 1.4) for regular insulin. No study was designed to investigate possible long term effects (e.g. mortality, diabetic complications), in particular in patients with diabetes related complications. AUTHORS' CONCLUSIONS: Our analysis suggests only a minor benefit of short acting insulin analogues in the majority of diabetic patients treated with insulin. Until long term efficacy and safety data are available we suggest a cautious response to the vigorous promotion of insulin analogues. For safety purposes, we need a long-term follow-up of large numbers of patients and well designed studies in pregnant women to determine the safety profile for both the mother and the unborn child.
Find related publications in this database (using NLM MeSH Indexing): Diabetes Mellitus, Type 1 - blood; Diabetes Mellitus, Type 2 - blood; Hemoglobin A, Glycosylated - metabolism; Humans - metabolism; Hypoglycemic Agents - therapeutic use; Insulin - analogs and derivatives; Randomized Controlled Trials as Topic - analogs and derivatives